Dosing apparatus for parenteral delivery of fluids

A dosing apparatus for parenteral delivery of at least two fluids, the dosing apparatus comprising:

• a dosing actuating unit comprising:
• a cam element rotatably arranged around a rotational axis;
• a cam profile extending from the cam element, wherein the cam element is configured be connected to a drive unit and be rotated by the drive unit around the rotational axis;
• and
• at least two dosing delivery devices, each dosing delivery device comprising:
• a chamber extending along an axis and a first piston movably arranged along the axis within the chamber, wherein the chamber is configured to accommodate a fluid, wherein the chamber comprises an outlet opening for deliver the accommodated fluid, wherein the first piston comprises a first cam follower configured to releasably engaged with the cam profile of the dosing actuating unit, and wherein an interface formed between the cam profile and the first cam follower is helical such that a rotational movement of the cam element is converted into an axial movement of the first piston along the axis of the chamber.